Hey man, After looking at the picture you posted, and provided you don't want to build a jig of some sort to place and reform the hood using heat, i would suggest you try to order a replacement part from Revell. From what i heard their customer service is quite good, and they provide spare parts even for older kits like yours. Another option is to use a glass bottle filled with very hot water and lid on, and try to bend the part back to shape. It has to be glass (because unlike plastic it wont deform with hot water) and because it is sealed you will have more time to work the part. Hope this helps!